Article · 15 min read

Please everyone, stop writing your own user authentication code

Alessandro Segala · With Blue Ink (Alessandro Segala) Free Intermediate

Auth is the piece founders most often assume is easy, and this walks through why it quietly is not: password storage, resets, session handling, multi factor, and the security patches that never stop. It is a concrete, technical case for using an identity provider instead of maintaining that surface yourself. Read it before you decide login is a weekend job.

• A real auth system is a permanent maintenance and security commitment, not a one time build
• Providers catch attack patterns across millions of users that you never could alone
• The time saved is time you can put into your actual product